Revolving door.



H. W. DYER,

REVOLVING DOOR.

APPLICATION FILED ma. 1, 1912.

1 ,26,824. V Patented Dec. 5, 1916.

3 SHEETS-SHEET I.

H. W. DYER. REVOLVING DOOR.

APPLICATION FILED FEB. I. 1912.

Patented Dec. 5, 1916.

3 SHEETS-SHEET 2 H1 w. DYE-R.

REVOLVING DOOR.

APPLICATION FILED FEB. I, 1912.

Patented Dec. 5,1916.

3 SHEETS-SHEET 3.

4M m W w Wr fi 2 W accuser.

nn rnn STATES PATENT OFFICE.

HARRY w. DYER, OF "NEW YORK, N. Y., AssIe oR 'IO VAN KANNEL REVOLVING.DOOR COMPANY, OF NEW YORK, 1\T.\Y., A CORPORATION OF NEW JE SEY.

REVOLVING DOOR.

Specification of Letters Patent. Patented Dec. 5, 1916.

Application filed February 1, 1912. Serial NO. 674,639.

7 '0 all whom it may concern:

Be it known that I, HARRY W. DYER, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Revolving Doors, ofwhich the following is a specification.

This invention relates to revolving doors of the type comprising aplurality of wings or leaves arranged radially around an axial support.

More particularly, it relates to a type of revolving doors in which thewings or leaves are held in their normal radial position by means ofspring-controlled look ing devices which permit'the leaves to be forcedout of theinnormal positions when subjected to heavy pressure. Doors ofthis type may be aptly described as panicproof, and the object of thepresent invention is to provide a revolving door of this.

type in which the locking mechanisms for the door wings or leaves is sodesigned that the pressure against them which would result if a crowd ofpeople attempts to force its way through'the door will be eifeotive indisengaging the locking devices and allowing the wings or leaves toswing in approximate parallelism, so leaving an open passa eway for theescape of the crowd.

ther Objects and advantages of the invention will appear in the courseof the following description in which reference is had to theaccompanying drawing forming part of this specification.

In the drawings I have illustrated two slightly different embodiments ofthe invention, and it will be obvious to persons skilled in the art,that various modifications may be made in the details of construc-.

tion and arrangement of parts without departing from the spirit of theinvention. As the invention relates only to the mechanism for lockingand releasing the door wings or leaves, I have not included in thedrawings the details of the door hanging devices or casing, which may beof any convenient design. L

In the drawings Figure 1 is a vertical sec tion through the axis of arevolving door provided with locking mechanism embodying the'presentinvention; Fig. 2 is a partial vertical section through the axis of thedoor showing on larger scale the mechanism shown in the middle portionof Fig. 1; Fig. 3 is a vertical section on the same scale as Fig. 2showing the arrangement of the collars which carry the leaf supportingarms; Fig. 4.- is a vertical section showing in detail the form of hingepreferably employed for mounting a. door leaf on its supporting arms;Fig. 5 is a top plan view of the spider for locking the door leaves atthe top of the door, with the central sleeve which carries the weight ofthe door shown in section; Fig. 6 is a transverse section: on the planesX and Y of Fig. 2; Fig. 7 is a detail view of a part ofthe mechanism forreleasing the locking mechanism: Fig. 8 is a horizontal section on thescale of Fig. 7 on the lane Z of Fig. 2; Fig. 9 is a detail View of t epawl and ratchet mechanism for holding the locking devices ininoperative position; Fig. 10 is a detail view showing the position ofthe door leaves or wings in pan allelism; Fig. 11 is'a bottom plan viewof fied form of locking mechanism; Fig. 13 is a detail View in verticalsection of the form -of spring" support employed in the modified form ofthe invention; 'Fig. 14: is a detail view in vertical section showingthe type'of lock releasing device used in the modified form of theinvention; Fig. 15 is a top plan view of the section locking spider inthe modified form of the invention; Fig. 16 is a bottom plan View of thespider used to lock the door leaves at the bottom in the modified formof the invention, and Fig. 17 is a detail View in vertical section ofthe bottom spider and associated structures in the modified form of theinvention.

Referring to the drawings by the reference characters, 1 designates avertical sleeve which carries the weight of the revolving door. Thissleeve may be designated for convenience as the supporting sleeve. It isslotted near the top so that the spider 2 which serves as a lock for theupper ends of the door sleeve may be fitted merit. The spider 2 isprovided with four arms 3 each of which carries on its under surface aplu rality of rounded projections 4 which engage suitably shaped socketsin the upper ends of tlie door leaves. The spider 2 is screwed onto aninternal sleeve 5 extending downward within the supporting sleeve 1.This sleeve 5 is screwed at its lower endand into a block 6, which isinclosed within the supporting sleeve and to this block are attached aplurality of spring supporting brackets 7 which extend outward throughvertical slots in the supporting sleeve 1. A plurality of tensionsprings 8 are carried by the brackets 7 and are attached at their lowerends to brackets 9 similar to: the brackets 7. These brackets 9 aresecured to a block 10 similar to the block 6 and are arranged to slidein slots in the supporting sleeve 1. Extending downward from the block10 and secured thereto is an internal sleeve 11 corresponding to theupper sleeve 5. This sleeve 11 is secured by a suitable coupling to alocking spider 12 with shorter arms than the spider 2 which engage thedoor leaves at the bottom,'rounded projections 13 being provided on thearms of the spider 12 for engagement with suitable sockets in the loweredge of the door leaves. A central rod, composed of two sections 9' and10 connected together by a couplingblock 11, is loose Within the sleeves5 and 11, the lower end of section 11 being provided with astepping-point 12 adapted to he stepped into a socket 13 to center thedoor.

The door leaves 14 (see Fig. 10) are hinged to leaf-supporting arms 15which extend radially, from a series of collars 16 which are arranged toturn around the supporting sleeve 1, as best shown in Fig. 3. Each hingecomprises a pintle 17 secured in one of the leaf-supporting arms and asuitable pair of hinge butts 18 which are fitted onto the ends of thepintle.

When the door leaves are in their normal radial position, as shown inFig. 5, the looking spiders 2 and 12 are normally held in lookingengagement with the door leaves by the tension of the springs 8. Thelocking engagement of the projections on the spider, owing to therounded form of the projections thereon, is not such as to lock the doorleaves rigidly, and heavy pressure exerted against the door leaves willforce the locking members out of engagement withthe leaves and permitthe leaves to be swung into parallelism as shown in Fig. 10. To permitthe release of the door leaves from looking engagement with the spiderwithout applying force to the leaves themselves, I provide the releasingmechanism shown in Figs. 2, 7 and 8. A transverse shaft 19 extendsthrough the axis of the door and is supported in suitable bearings 20 onthe inside of an external sleeve 21 which encircles and forms a casingfor the springs 8 and associated structures. This sleeve 21 is attachedto the supporting sleeve 1 in any suitable manner and similar sleeves 22and 23 are provided above and below the leaf-supporting armsrespectively. Near each end of the shaft 19 and rigidly secured thereto,I provide a member 2 T presenting a pair of oppositely arranged arms.These arms are connected by links 25 with U-shaped brackets 26 which areattached to the blocks 6 and 10, as best shown in Fig. 2. By a partialrotation of the shaft 19, the links 25 and the brackets 26 are forcedinto the position shown in dotted lines in Fig. 7 thus overcoming thetension of the springs 8 and forcing the locking spiders out ofengagement with the door leaves, as will be readily understood fromexamination of Fig. 1.. To facilitate the turning of the shaft 19, it isprovided with squared extensions 27, as shown in Fig. 9, to receive awrench. Adjacent to the squared extension of the shaft 19, I provide asmall ratchet 28 and supply a pair of pawls 29-to cooperate therewith.These pawls lock the ratchet against rotation and prevent the spiders 2and 12 from moving into engagement with the door leaves until the pawlsare released and the springs 8 allowed to act.

In the modified form of the invention illustrated in Figs. 12 to 17inclusive, I have provided locking spiders arranged in sections whichare independently movable.

This construction is designed to permit the release of each door leafsingly without disturbing the others. The upper spider comprises aplurality of independent arms 30 which may be connected by dove-tailjoints, as shown, or in anyother suitable manner. In like manner thelower spider is composed of a plurality of independent arms 31, as

shown in Fig. 16. The spiders are arranged to slide vertically on thedoor supporting sleeve 1, as in the form of the invention firstdescribed, but each spider arm is secured to an independent supportingmember 33. These supporting members are arranged within the sleeve 1 andare secured against separation by dove-tail joints or otherwise, buteach is slidable independently of the others. The members 33 arearranged in two sets, the lower set carrying the arms of the lowerlooking spider and the upper set carrying the arms of the upper lockingspider. Attached to the upper set of members 33, near their lower endsare a set of springs supporting brackets 34, as shown in Figs. 12 and13. Each of the brackets 34 has a curved arm or lug projecting laterallytherefrom. These arms 35 are arranged in pairs as shown in Fig. 12 forreasons that will presently appear. A similar set of brackets isprovided at the upper ends of the lower set of members 33 and the twosets of brackets are connected by means of tension springs 8 as in thefirst form of the invention. To force the brackets of the upper set awayfrom those of the lower set against the tension of the springs 8, Iprovide separating or releasing devices of the form shown in F ig." 14.Into the underside of the lug 35 on each of the upper brackets 34, a rod36 is screwed and a similar rod is l'screwed' into the upper side ofeach lug 35 13 1 and a screw 38 'with a tapered end is x 35 her, avertically movable yielding locking" mounted in each'socket 37 so thatthe tapered end of the screw may be forced between the adjacent ends ofeach pair of rods 36. The outer end of each screw 37 is squared 15 toreceive a socket wrench and the casing sleeve 23 has an opening adjacentto each of the screws 37 to permit the insertion of the wrench, as shownin Fig. 14.

From the foregoing description of the modified forni of my invention itwill. be

seen that the separation of one pair of brackets 34 will result in therelease of only one door leaf; but if a crowd surging against the doorin an attempt to escape the pressure against the door leaves will forcethe locking members on the spiders out of engagement with the doorleaves and permit the leaves to swing as in the form of my inventionfirst described. I

What I claim is:

1. A revolving door having in combination, an axial supporting member, aplurality of one part wings, arranged to swing independently about thesupporting memspider at the top of the door, and in engagement with thewings thereof, whereby, upon the application of abnormal pressure to thewings, the spider will yield to permit the 0 wings to fold.

I 2. A revolving "door having in combination, an axialsupporting-member, a plurality of one part wings arranged to swing aboutthe supporting-member, a sectional spider and an engaging connection,yieldable under abnormal pressure, between each arm of the spider andthe upper edge of .each wing, each section of the spider beingvertically-movable, so that each wing may be independently movable ofthe others.

3. A revolving-door having in combination, an axial supporting-member, aplurality vof wings arranged to swing about the supporting member, avertically movable locking-spider carried by said supportingmember,engaging means, yielding under abnormal pressure, between the upperedges of the wings and the arms of the spider, means for exerting aconstant pressure to hold. the wings into engagement with the spiderarms, and means for releasing such pressure. j

4. A revolving-door having in combination, an axial supporting-member, aplurality of wings arranged to swing about the supporting-member, asectional spider, an

supporting member, yielding means engaging the upper and lower portionsof the wings to hold them in radial position with respect to thesupporting member, but

adapted 'to be forced apart by the application of abnormal pressure, sothat the wings may be released and folded to make a pas- 6. A revolvingdoor having in combination, an axial supporting-member, a plurality ofwings arranged to swing about the supporting member, locking membersengaging the upper and lower portions of the wings to hold them innormal radial position withrespect to the supporting-member, yieldingmeans connecting the locking means which permits the locking means toseparate yieldingly to disengage-the wings to permit them to fold uponthe application of abnormal pressure.

7. A revolving door having in combination, an axial supporting member, aplurality of wings arranged to swing about the supporting member, avertically movable locking spider at the top of said Wings, and inyielding engagement with the upper porsageway, upon the application ofabnormal pressure. 1

tions of said wings, the locking spider being adapted to yield whenexcessive pressure greater than that necessary to revolve .the door'inordinarv operation, is applied to the wings, to permit said wings tofold, and

means for exerting a constant pressure to hold the locking spider inengagement with said wings.

8. A revolving door, haymg- 1n combination an axial supporting-member; aplural-- ity of wings arranged to swing about the supporting-member; alocking-member ar ranged to yieldably engage the upper edges of thewings, a locking-member arranged to 'yieldably engage the bottom edgesofthe tion an axial supporting-member; a plurality of wings arranged toswing about said supporting-member; vertically movable locking-membersadapted to yieldably engage the upper and lower edges of the wings;upper and lower blocks carried by the locking-members, and springsbetween the blocks for holding the locking-members into yieldingengagement with the wings.

10. A revolving-door having in combination an axial supporting-member, aplurality of wings arranged to swing about said supporting-member; alocking member carrying a depending sleeve and provided with meansyieldably engaging the top edges of the wings; a block connected to thelower end of the sleeve and having arms projecting through slots in thesupporting-member, and connected with said arms for exerting a constantpressure to hold the locking-member into yieldable engagement with thewings. v

11. A revolving-door, having in combinavtion an axial supporting-member;a plurality of wings arranged to swing about said supporting member; avertically movable HARRY W. DYER.

Witnesses H. C. STUMER, E. C. HAVILAND.

